Study On The Motion And Dynamic Characteristics Of The Confrontation Emulsion Pump

With the ability of the coal mine fully mechanized and the development of the related equipment, Emulsion pump as the coal mine safety protection device——the power source of hydraulic support, it trends must to be the "high pressure, large displacement".As a new type of emulsion pump,confrontation emulsion pump also have reasonable innovation about internal transmission mechanism and changed the crankshaft and link arrangement of the past emulsion, a new direction of the development of the large displacement emulsion was opened up and an new design concept——"Less Crank, Much plunger" was put forward.In this case, the key components of affecting performance is the crankshaft and link mechanism which design is reasonable or not will directly affect the implementation of this design concept, so studying on the motion and dynamic characteristics of the confrontation emulsion pump is a significant issue.Collected by field investigation and related literature, the design principle of crankshaft and link was summarized and the best location of the double supporting and tri-crank crankshaft was identified and the important problem of movement of two links was solved and the component’s optimum structure form was given and spherical as relative rotation between the internal and external links was adoptted and the component was developed.Used complex vector theory to analyze the kinematics of crank and link mechanism, the displacement,velocity and acceleration of sliders were explored-Based on the principle of engineering mechanics and mechanisms, the calculation method of dynamic and static load were given, as its strength and rigidity of mechanical basis. Used CAD drawing software——Solidworks modeling effectively for the crankshaft, link and slider, combined with the virtual prototype software ADAMS dynamic simulation, the displacement, velocity and acceleration of slider curves were obtained, got the stress curves of crankpin and slider articulated point, the correct and reasonable mathematical model was verified. Used parametric analysis function of ADAMS software, aimed at the crankshaft and link mechanism,Determine the crankshaft crank eccentricity as design variables, with the sliders’acceleration range minimum as the optimization goal, obtained the optimal parameter combination.